@BOOK{Schrijver2005,
  title = {On the history of combinatorial optimization(till 1960)},
  publisher = {Springer; 1 edition (February 12, 2003)},
  year = {2005},
  author = {Alexander Schrijver},
  file = {:Schrijver2005.pdf:PDF},
  owner = {Thomas},
  timestamp = {2012.10.15}
}